Ya I know. if x+y < (x+y)/2, then x+y is negative. This clearly means x is negative and y is positive. But the answer is still E because x+y/2 is the midpoint. x is 5 units away from x+y/2 and x+y/2 is the midpoint of x and y. This means y is also 5 units away from x+y/2 on the other side. Thus E is the answer